perf(transformer/using): only transform block statements if needed

[camc314]

No description provided.

[camc314]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• perf(transformer/using): only transform block statements if needed #9716 👈 (View in Graphite)
• perf(transformer/using): only do work to a switch stmt if it contains a using decl #9715
• perf(transformer/using): only do work to a static block if it has a using decl #9714
• refactor(transformer/using): move work to exit_static_block #9713
• main

---

How to use the Graphite Merge Queue

Add either label to this PR to merge it via the merge queue:

• 0-merge - adds this PR to the back of the merge queue
• hotfix - for urgent hot fixes, skip the queue and merge this PR next

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[camc314]

note, for this our output is the same, but:

• our _usingCtx3 is babel's _usingCtx
• our _usingCtx is babel's _usingCtx3

as we transform on exit, not on enter

[codspeed-hq]

CodSpeed Performance Report

Merging #9716 will not alter performance

_{Comparing c/03-12-perf_transformer_using_only_transform_block_statements_if_needed (4cb9404) with c/03-12-perf_transformer_using_only_do_work_to_a_switch_stmt_if_it_contains_a_using_decl (f2b57bb)}

Summary

✅ 33 untouched benchmarks

[camc314]

@overlookmotel the changes in this stack appear to regresss perf which is the opposite of what i intended 🫠 > #9717

[overlookmotel]

the changes in this stack appear to regresss perf

Oh bollocks!

I'm tied up with some other stuff today. Will likely not get time to review until tomorrow. Maybe we can tweak it to get perf moving in the right direction.